RH5RE30AA-TZ-F [RICOH]
Fixed Positive Standard Regulator;
| 型号： | RH5RE30AA-TZ-F |
| 厂家： | 
RICOH ELECTRONICS DEVICES DIVISION |
| 描述： | Fixed Positive Standard Regulator 输出元件 调节器 |
| 文件： | 总20页 (文件大小：376K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Rx5RE SERIES
VOLTAGE REGULATOR
OUTLINE
NO. EA-016-130402
The Rx5RE Series are CMOS-based voltage regulator ICs with high output voltage accuracy and ultra-low
quiescent current. Each of these ICs consists of a voltage reference unit, an error amplifier, a driver transistor,
and resistors for setting output voltage, and a current limit circuit. By use of these ICs, a constant voltage power
supply circuit with high efficiency can be constructed because the dropout voltage and quiescent current of these
ICs are very small. Furthermore, theses ICs have a built-in current limit circuit. The output voltage of these ICs is
fixed with high accuracy.
Two types of packages, TO-92 (Discontinued) and SOT-89 (Mini-power Mold) are available.
FEATURES
• Supply Current.............................................................Typ. 1.1μA (VOUT=3.0V, VIN=5.0V)
• Dropout Voltage ...........................................................Typ. 0.5V (IOUT=60mA, VOUT=2.8V)
• Output Current .............................................................Typ. 120mA (VOUT=5.0V)
• Input Voltage Range ....................................................Max. 10.0V
• Output Voltage Range..................................................2.0V to 6.0V (0.1V steps)
(For other voltages, please refer to MARK INFORMATIONS.)
• Output Voltage Accuracy..............................................±2.5%
• Temperature-Drift Coefficient of Output Voltage..........Typ. ± 100ppm/°C
• Line Regulation............................................................Typ. 0.1%/V
• Packages .....................................................................SOT-89 (Mini-power Mold),TO-92 (Discontinued)
APPLICATIONS
• Power source for battery-powered equipment
• Power source for cameras, video instruments such as camcorders, VCRs, and hand- held communication
equipment
• Precision voltage references
1
Rx5RE
BLOCK DIAGRAMS
Rx5RE
VIN
V
OUT
2
3
+
–
Vref
1
GND
SELECTION GUIDE
The output voltage and package for the ICs can be selected at the user’s request.
Product Name
RH5RExxAA-T1-FE
RE5RExxAA-TZ-F
Package
SOT-89
Quantity per Reel
1,000 pcs
Pb Free
Yes
Halogen Free
Yes
No
TO-92 (Discontinued)
2,500 pcs
Yes
xx: The output voltage can be designated in the range from 2.0V (20) to 6.0V (60) in 0.1V steps.
(For other voltages, please refer to MARK INFORMATIONS.)
2
Rx5RE
PIN CONFIGURATION
z SOT-89
z TO-92
(mrk side)
(mark side)
3
1
2
1
2
3
PIN DESCRIPTION
• SOT-89
Pin No
Symbol
GND
VIN
Pin Description
1
2
3
Ground Pin
Input Pin
VOUT
Output Pin
• TO-92 (Discontinued)
Pin No
Symbol
GND
VIN
Pin Description
1
2
3
Ground Pin
Input Pin
VOUT
Output Pin
3
Rx5RE
ABSOLUTE MAXIMUM RATINGS
Symbol
Item
Rating
12
Unit
V
VIN
Input Voltage
Output Voltage
Output Current
VOUT
IOUT
V
−0.3 to VIN+0.3
300
mA
Power Dissipation∗ (SOT-89)
Power Dissipation∗ (TO-92) (Discontinued)
Operating Temperature Range
Storage Temperature Range
900
PD
mW
300
Topt
Tstg
−40 to 85
−55 to 125
°C
°C
Tsolder
Lead Temperature (Soldering)
260°C,10s
∗) For Power Dissipation, please refer to PACKAGE INFORMATION.
ABSOLUTE MAXIMUM RATINGS
Electronic and mechanical stress momentarily exceeded absolute maximum ratings may cause the
permanent damages and may degrade the life time and safety for both device and system using the device
in the field.
The functional operation at or over these absolute maximum ratings is not assured.
RECOMMENDED OPERATING CONDITIONS (ELECTRICAL CHARACTERISTICS)
All of electronic equipment should be designed that the mounted semiconductor devices operate within the
recommended operating conditions. The semiconductor devices cannot operate normally over the
recommended operating conditions, even if when they are used over such conditions by momentary
electronic noise or surge. And the semiconductor devices may receive serious damage when they continue
to operate over the recommended operating conditions.
4
Rx5RE
ELECTRICAL CHARACTERISTICS
• Rx5RE20A
Topt=25˚C
Symbol
VOUT
IOUT
Item
Output Voltage
Output Current
Conditions
VIN=4.0V,IOUT=10mA
VIN=4.0V
Min.
1.950
40
Typ.
2.000
60
Max.
Unit
2.050
V
mA
∆VOUT
∆IOUT
VIN=4.0V
Load Regulation
40
80
mV
1mA≤IOUT≤50mA
VDIF
ISS
Dropout Voltage
IOUT=30mA
VIN=4.0V
0.5
1.0
0.7
3.0
V
Quiescent Current
µA
∆VOUT
∆VIN
IOUT=10mA
Line Regulation
0.1
%/V
VOUT+1.0V≤VIN≤10V
VIN
Input Voltage
Current Limit
10
V
Ilim
240
100
mA
∆VOUT
∆Topt
Output Voltage
Temperature Coefficient
IOUT=10mA
ppm/˚C
–40˚C≤Topt≤85˚C
• Rx5RE30A
Topt=25˚C
Symbol
VOUT
IOUT
Item
Output Voltage
Output Current
Conditions
VIN=5.0V,IOUT=10mA
VIN=5.0V
Min.
2.925
50
Typ.
3.000
80
Max.
Unit
3.075
V
mA
∆VOUT
∆IOUT
VIN=5.0V
Load Regulation
40
80
mV
1mA≤IOUT≤60mA
VDIF
ISS
Dropout Voltage
IOUT=40mA
VIN=5.0V
0.5
1.1
0.7
3.3
V
Quiescent Current
µA
∆VOUT
∆VIN
IOUT=10mA
Line Regulation
0.1
%/V
VOUT+1.0V≤VIN≤10V
VIN
Input Voltage
Current Limit
10
V
Ilim
240
100
mA
∆VOUT
∆Topt
Output Voltage
Temperature Coefficient
IOUT=10mA
ppm/˚C
–40˚C≤Topt≤85˚C
5
Rx5RE
• Rx5RE40A
Topt=25˚C
Symbol
VOUT
IOUT
Item
Output Voltage
Output Current
Conditions
VIN=6.0V,IOUT=10mA
VIN=6.0V
Min.
3.900
65
Typ.
4.000
100
Max.
Unit
4.100
V
mA
∆VOUT
∆IOUT
VIN=6.0V
Load Regulation
40
80
mV
1mA≤IOUT≤70mA
VDIF
ISS
Dropout Voltage
IOUT=50mA
VIN=6.0V
0.5
1.2
0.7
3.6
V
Quiescent Current
µA
∆VOUT
∆VIN
IOUT=10mA
Line Regulation
0.1
%/V
VOUT+1.0V≤VIN≤10V
VIN
Input Voltage
Current Limit
10
V
Ilim
240
100
mA
∆VOUT
∆Topt
Output Voltage
Temperature Coefficient
IOUT=10mA
ppm/˚C
–40˚C≤Topt≤85˚C
• Rx5RE50A
Topt=25˚C
Unit
Symbol
VOUT
IOUT
Item
Output Voltage
Output Current
Conditions
VIN=7.0V,IOUT=10mA
VIN=7.0V
Min.
4.875
80
Typ.
5.000
120
Max.
5.125
V
mA
mV
∆VOUT
∆IOUT
VIN=7.0V
Load Regulation
40
80
1mA≤IOUT≤80mA
VDIF
ISS
Dropout Voltage
IOUT=60mA
VIN=7.0V
0.5
1.3
0.7
3.9
V
Quiescent Current
µA
∆VOUT
∆VIN
IOUT=10mA
Line Regulation
0.1
%/V
VOUT+1.0V≤VIN≤10V
VIN
Input Voltage
Current Limit
10
V
Ilim
240
100
mA
∆VOUT
∆Topt
Output Voltage
Temperature Coefficient
IOUT=10mA
ppm/˚C
–40˚C≤Topt≤85˚C
6
Rx5RE
• Rx5RE60A
Topt=25˚C
Unit
Symbol
VOUT
IOUT
Item
Output Voltage
Output Current
Conditions
VIN=8.0V,IOUT=10mA
VIN=8.0V
Min.
5.850
80
Typ.
6.000
120
Max.
6.150
V
mA
∆VOUT
∆IOUT
VIN=8.0V
Load Regulation
40
80
mV
1mA≤IOUT≤80mA
VDIF
ISS
Dropout Voltage
IOUT=60mA
VIN=8.0V
0.5
1.4
0.7
4.2
V
Quiescent Current
µA
∆VOUT
∆VIN
IOUT=10mA
Line Regulation
0.1
%/V
VOUT+1.0V≤VIN≤10V
VIN
Input Voltage
Current Limit
10
V
Ilim
240
100
mA
∆VOUT
∆Topt
Output Voltage
Temperature Coefficient
IOUT=10mA
ppm/˚C
–40˚C≤Topt≤85˚C
7
Rx5RE
ELECTRICAL CHARACTERISTICS BY OUTPUT VOLTAGE
Output Voltage
VOUT(V)
OutputCurrent
IOUT(mA)
Load Regulation
Dropout Voltage
VDIF(V)
∆VOUT/∆IOUT(mV)
Part Number
Conditions
Min.
Typ.
Max.
Conditions
Min.
Typ.
Conditions
Typ.
Max.
Conditions
Typ.
Max.
Rx5RE20A
Rx5RE21A
Rx5RE22A
Rx5RE23A
Rx5RE24A
Rx5RE25A
Rx5RE26A
Rx5RE27A
Rx5RE28A
Rx5RE29A
Rx5RE30A
Rx5RE31A
Rx5RE32A
Rx5RE33A
Rx5RE34A
Rx5RE35A
Rx5RE36A
Rx5RE37A
Rx5RE38A
Rx5RE39A
Rx5RE40A
Rx5RE41A
Rx5RE42A
Rx5RE43A
Rx5RE44A
Rx5RE45A
Rx5RE46A
Rx5RE47A
Rx5RE48A
Rx5RE49A
Rx5RE50A
Rx5RE51A
Rx5RE52A
Rx5RE53A
Rx5RE54A
Rx5RE55A
Rx5RE56A
Rx5RE57A
Rx5RE58A
Rx5RE59A
Rx5RE60A
1.950 2.000 2.050
2.048 2.100 2.152
2.145 2.200 2.255
2.243 2.300 2.357
2.340 2.400 2.460
2.438 2.500 2.562
2.535 2.600 2.665
2.633 2.700 2.767
2.730 2.800 2.870
2.828 2.900 2.972
2.925 3.000 3.075
3.023 3.100 3.177
3.120 3.200 3.280
3.218 3.300 3.382
3.315 3.400 3.485
3.413 3.500 3.587
3.510 3.600 3.690
3.608 3.700 3.792
3.705 3.800 3.895
3.803 3.900 3.997
3.900 4.000 4.100
3.998 4.100 4.202
4.095 4.200 4.305
4.193 4.300 4.407
4.290 4.400 4.510
4.388 4.500 4.612
4.485 4.600 4.715
4.583 4.700 4.817
4.680 4.800 4.920
4.778 4.900 5.022
4.875 5.000 5.125
4.973 5.100 5.227
5.070 5.200 5.330
5.168 5.300 5.432
5.265 5.400 5.535
5.363 5.500 5.637
5.460 5.600 5.740
5.558 5.700 5.842
5.655 5.800 5.945
5.753 5.900 6.047
5.850 6.000 6.150
VIN–
VOUT
=2.0V
1mA≤
IOUT
≤50mA
IOUT
40
60
=30mA
VIN–
VOUT
=2.0V
1mA≤
IOUT
≤60mA
IOUT
50
80
=40mA
VIN
–
VIN–
VOUT
=2.0V
VOUT
VIN–
VOUT
=2.0V
=2.0V
40
80
0.5
0.7
1mA≤
IOUT
IOUT
=10mA
≤70mA
IOUT
65
100
=
50mA
VIN–
VOUT
=2.0V
1mA≤
IOUT
IOUT
80
120
=60mA
≤80mA
8
Rx5RE
Topt=25˚C
Line Regulation Input Voltage Current Limit Output Voltage Tempco.
∆VOUT/∆VIN(%/V) VIN(V) Ilim(mA) ∆VOUT/∆T(ppm/˚C)
Quiescent Current
Iss(µA)
Conditions
Typ.
Max.
Conditions
Typ.
Max.
Typ.
Conditions
Typ.
1.0
3.0
3.3
1.1
IOUT
=10mA
IOUT
=10mA
VIN–
1.2
3.6
0.1
10
240
100
VOUT
=2.0V
VOUT+
1.0V≤
VIN
–40˚C≤
Topt
≤85˚C
≤10V
1.3
3.9
1.4
4.2
9
Rx5RE
OPERATION
Output voltage VOUT divided at the node between regis-
ters R1 and R2 is compared with reference voltage by
error amplifier, so that a constant voltage is output.
VOUT
VIN
Error Amplifire
–
R1
R2
+
Vref
GND
GND
FIG. 1 Brock Diagram
TEST CIRCUITS
IOUT
ISS
VIN
VOUT
Rx5RE
VIN
VIN
VOUT
Rx5RE
VOUT
VIN
SERIES
SERIES
CI
1µF
Co
+
1µF
+
CI
1µF
GND
+
GND
FIG. 2 Test Circuit
FIG. 3 Quiescent Current Test Circuit
VIN
VOUT
Rx5RE
VOUT
SERIES
+
GND
Co
Ro
P.G
0.1µF
FIG. 4 Line Transient Response Test Circuit
10
Rx5RE
TYPICAL CHARACTERISTICS
1) Output Voltage vs. Output Current
Rx5RE30A
Rx5RE40A
VIN=5.0V
VIN=6.0V
3.1
4.1
4.0
3.9
3.8
3.7
Topt= –40˚C
Topt=–40˚C
3.0
25˚C
25˚C
2.9
85˚C
2.8
85˚C
2.7
0
250
50
100
0
50
100
150
200
150
200
Output Current IOUT(mA)
Output Current IOUT(mA)
Rx5RE50A
Rx5RE50A
VIN=7.0V
VIN=7.0V
5.1
5.0
4.9
4.8
4.7
5.1
Topt=–40˚C
with heatsink
5.0
4.9
25˚C
without heatsink
85˚C
4.8
4.7
heatsink
30×30×1mm
0
50 100 150 200 250 300 350
Output Current IOUT(mA)
0
50
100
150
200 250
Output Current IOUT(mA)
2) Output Voltage vs. Input Voltage
Rx5RE20A
Rx5RE20A
Topt=25˚C
Topt=25˚C
2.4
2.04
2.02
2.00
2.2
IOUT=1µA
2.0
1.8
IOUT=1µA
1.6
10mA
10mA
1.4
1mA
1.2
1.98
1.96
1mA
1.0
0.8
1.0
2.0
3.0
4.0
5.0
2
3
4
5
6
7
Input Voltage VIN(V)
Input Voltage VIN(V)
11
Rx5RE
Rx5RE30A
Rx5RE30A
Topt=25˚C
Topt=25˚C
3.4
3.2
3.0
3.00
2.99
2.98
2.97
IOUT=1µA
IOUT=1mA
2.8
2.6
1mA 10mA
50mA
2.4
2.2
2.0
1.8
2.96
2.95
10mA
2.0
2.5
3.0
3.5
4.0
4.5
3.0
4.0
5.0
6.0
7.0
8.0
Input Voltage VIN(V)
Input Voltage VIN(V)
Rx5RE40A
Rx5RE40A
Topt=25˚C
Topt=25˚C
4.2
4.0
3.8
3.6
4.06
4.04
IOUT=1mA
4.02
4.00
IOUT=1µA
10mA
50mA
10mA
1mA
3.4
3.2
3.98
3.96
2.5
3.5
4.5
5.5
4
5
6
7
8
9
Input Voltage VIN(V)
Input Voltage VIN(V)
Rx5RE50A
Rx5RE50A
Topt=25˚C
Topt=25˚C
5.1
5.0
4.8
5.05
5.04
5.03
IOUT=1mA
5.02
5.01
5.00
10mA
50mA
IOUT=1µA
4.6
4.4
4.2
4.99
4.98
4.97
1mA
10mA
4.96
4.95
4.0
4.5
5.0
5.5
6.0
6.5
5
6
7
8
9
10
Input Voltage VIN(V)
Input Voltage VIN(V)
12
Rx5RE
3) Dropout Voltage vs. Output Curret
Rx5RE30A
Rx5RE40A
1.4
1.0
0.8
0.6
0.4
0.2
0.0
1.2
85˚C
85˚C
1.0
0.8
25˚C
25˚C
0.6
0.4
0.2
0.0
Topt=–40˚C
Topt=–40˚C
0
20
40
60
80
100
0
20
40
60
80
100
Output Current IOUT(mA)
Output Current IOUT(mA)
Rx5RE50A
0.8
0.7
0.6
85˚C
0.5
0.4
25˚C
0.3
0.2
0.1
0.0
Topt= –40˚C
0
20
40
60
80
100
Output Current IOUT(mA)
4) Output Voltage vs.Temperature
Rx5RE30A
Rx5RE40A
IOUT=10mA
IOUT=10mA
4.1
3.1
4.0
3.0
2.9
3.9
-50 -30 -10 10 30 50 70 90
-50 -30 -10 10 30 50 70 90
Temperature Topt(˚C)
Temperature Topt(˚C)
13
Rx5RE
Rx5RE50A
IOUT=10mA
5.2
5.1
5.0
4.9
4.8
-50 -30 -10 10 30 50 70 90
Temperature Topt(˚C)
5) Quiescent Current vs. Input Voltage
Rx5RE20A
Rx5RE30A
Topt=25˚C
Topt=25˚C
1.1
1.4
1.3
1.0
0.9
0.8
1.2
1.1
1.0
0.7
0.6
3
4
5
6
7
8
9
10
2
3
4
5
6
7
8
9
10
Input Voltage VIN(V)
Input Voltage VIN(V)
Rx5RE50A
Rx5RE40A
Topt=25˚C
Topt=25˚C
1.5
1.5
1.4
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
1.3
1.2
1.1
1.0
4
5
6
7
8
9
10 11
5
6
7
8
9
10 11 12
Input Voltage VIN(V)
Input Voltage VIN(V)
14
Rx5RE
6) Quiescent Current vs. Temperature
Rx5RE30A
Rx5RE20A
1.5
1.4
1.5
1.4
1.3
1.2
1.1
1.3
1.2
1.1
1.0
0.9
0.8
1.0
0.9
0.8
0.7
0.6
0.7
0.6
0.5
0.5
–50 –30 –10 10 30 50 70 90
–50 –30 –10 10 30 50 70 90
Temperature Topt(˚C)
Temperature Topt(˚C)
Rx5RE40A
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
–50 –30 –10 10 30 50 70 90
Temperature Topt(˚C)
7) Dropout Voltage vs. Set Output Voltage
Rx5RE SERIES
Topt=25˚C
0.7
0.6
0.5
IOUT=50mA
0.4
0.3
0.2
10mA
0.1
1mA
0.0
0
1
2
3
4
5
6
Set Output Voltage Vreg(V)
15
Rx5RE
8) Line Transient Response (1)
Rx5RE20A
Rx5RE30A
IOUT=1mA
IOUT=1mA
7.0
6.0
5.0
5.0
4.5
4.5
3.5
3.0
2.5
2.0
Input Voltage
Input Voltage
4.0
3.0
Output Voltage
Output Voltage
2.0
1.0
1.5
1.0
1.5 2.0 2.5 3.0 3.5 4.0 4.5
Time t(ms)
1.5 2.0 2.5 3.0 3.5 4.0 4.5
Time t(ms)
Rx5RE40A
Rx5RE50A
IOUT=1mA
IOUT=1mA
9.0
8.0
8.0
7.0
6.0
5.0
4.0
3.0
7.0
6.0
5.0
4.0
3.0
2.0
Input Voltage
Input Voltage
Output Voltage
Output Voltage
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
Time t(ms)
1.5 2.0 2.5 3.0 3.5 4.0 4.5
Time t(ms)
9) Line Transient Response (2)
Rx5RE20A
Rx5RE30A
IOUT=30mA
5.0
IOUT=30mA
7.0
6.0
5.0
4.5
4.0
Input Voltage
3.5
3.0
Input Voltage
2.5
4.0
3.0
Output Voltage
Output Voltage
2.0
1.5
1.0
0.5
2.0
1.0
0.0
1.5 2.0 2.5 3.0 3.5 4.0 4.5
1.5 2.0 2.5 3.0 3.5 4.0 4.5
Time t(ms)
Time t(ms)
16
Rx5RE
Rx5RE40A
Rx5RE50A
IOUT=30mA
IOUT=30mA
9.0
8.0
7.0
6.0
5.0
4.0
3.0
8.0
7.0
6.0
Input Voltage
Input Voltage
5.0
4.0
Output Voltage
Output Voltage
3.0
2.0
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
Time t(ms)
1.5 2.0 2.5 3.0 3.5 4.0 4.5
Time t(ms)
17
Rx5RE
TYPICAL APPLICATION
In Rx5RE Series, a constant voltage can be obtained
without using capacitors C1 and C2. However, when the
wire connected to VIN is long, use capacitor C1. Output
noise can be reduced by using capacitor C2.
VIN
VOUT
Rx5RE
VIN
VOUT
GND
SERIES
+
+
C1
C2
GND
Insert capacitors C1 and C2 with the capacitance of
0.1µF to 2.0µF between input/output pins and GND pin
with minimum wiring.
GND
APPLICATION CIRCUITS
• VOLTAGE BOOST CIRCUIT
The output voltage can be obtained by the follow-
ing formula :
VIN
VOUT
1
Rx5RE
*
VIN
VOUT
VOUT=Vreg · (1+R2/R1) + ISS · R2
SERIES
Since the quiescent current of Rx5RE Series is so
small that the resistances of R1 and R2 can be set as
large as several hundreds kΩ and therefore the sup-
ply current of “Voltage Boost Circuit” itself can be
reduced.
+
GND
C2
R1
ISS
+
C1
GND
R2
Furthermore, since Rx5RE Series are operated by
a constant voltage, the supply current of “Voltage
Boost Circuit” is not substantially affected by the
input voltage.
1) Vreg : Set Output Voltage of Rx5RE Series.
*
• DUAL POWER SUPPLY CIRCUIT
As shown in the circuit diagram, a dual power sup-
ply circuit can be constructed by using two Rx5RE
Series.
IC1
VIN
VOUT
VOUT1
5V
VIN
Rx5RE20A
This circuit diagram shows a dual power supply
circuit with an output of 3V and an output of 5V.
When the minimum output current of IC2 is larger
than ISS of IC1, resistor R is unnecessary. Diode D is
a protection diode for the case where VOUT2
becomes larger than VOUT1.
+
C1
D
R
ISS
GND
IC2
VOUT
VIN
+
VOUT2
3V
Rx5RE30A
GND
+
C3
C2
GND
GND
18
Rx5RE
• CURRENT BOOST CIRCUIT
Output current of 120mA or more can be obtained
by the current boost circuit constructed as shown in
this circuit diagram.
Tr.1
VIN
VOUT
Rx5RE
SERIES
VIN
VOUT
GND
+
+
C1
C2
GND
GND
• CURRENT BOOST CIRCUIT WITH OVERCURRENT LIMIT CIRCUIT
A circuit for protecting Tr.1 from the destruction
caused by output short-circuit or overcurrent is shown in
this circuit diagram.
Tr.1
R2
Vbe2
When the voltage reduction caused by the current (
IOUT) which flows through R2 reaches Vbe2 of Tr.2 by
additionally providing the current boost circuit with Tr.2
and R2, Tr.2 is turned ON and the base current of Tr.1 is
increased, so that the output current is limited.
Current limit of Overcurrent Limit Circuit is obtained
as follows :
Tr.2
IOUT
VIN
VOUT
Rx5RE
VIN
SERIES
R1
VOUT
C2
+
+
GND
GND
GND
IOUT
Vbe2/R2
• CURRENT SOURCE
A current source with the structure as shown in
this circuit diagram can be used. Output Current
IOUT is obtained as follows :
IOUT
VIN
VOUT
Rx5RE
VIN
1
SERIES
*
R
IOUT=Vreg /R + ISS
GND
+
Take care that Output Current IOUT does not exceed
its allowable current.
ISS
C1
1) Vreg : Set Output Voltage of Rx5RE Series.
*
19
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